Cisco ONS 15454 DWDM Reference Manual page 745

Appendix A Hardware Specifications
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Caution
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Transmitter (trunk side)
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Note An optical device on the card keeps the laser wavelength locked as closely as possible to the ITU nominal
value. The allowed drift is +/– 25 pm.
Currently available wavelengths of TXP_MR_2.5G and TXPP_MR_2.5G (eight card versions):
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ITU grid blue band: 1530.334 to 1544.526 nm (four card versions covering four wavelengths each)
ITU grid red band: 1546.119 to 1560.606 nm (four card versions covering four wavelengths each)
• Receiver (trunk side, see
Table A-32
OSNR
22 dB
22 dB
21 dB
22 dB
23 dB
12 dB
12 dB
12 dB
21 dB
1. OSNR defined with 0.1 nm resolution bandwidth (RBW)
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78-18343-02
Fiber: 1550-nm single-mode
Maximum chromatic dispersion allowance: 5400 ps/nm
Loopback modes: Terminal and facility
You must use a 20-dB fiber attenuator (15 to 25 dB) when working with the TXP_MR_2.5G
and TXPP_MR_2.5G cards in a loopback on the trunk port. Do not use direct fiber loopbacks
with the TXP_MR_2.5G and TXPP_MR_2.5G cards. Using direct fiber loopbacks causes
irreparable damage to the TXP_MR_2.5G and TXPP_MR_2.5G cards.
Connectors: LC
Maximum transmitter output power: +1 dBm
Minimum transmitter output power: –4.5 dBm
Transmitter: Direct modulated laser
Wavelength stability (drift): +/– 25 picometers (pm)
Table
TXP_MR_2.5G/TXPP_MR_2.5G Card Receiver Trunk Side Specifications
1
FEC Type Pre-FEC BER
Off - 2R < 10 exp – 12
Off - 2R < 10 exp – 12
Off - 3R < 10 exp – 12
Off - 3R < 10 exp – 12
Off - 3R < 10 exp – 12
Standard- 3R < 10 exp – 5
Standard- 3R < 10 exp – 5
Standard- 3R < 10 exp – 5
Standard- 3R < 10 exp – 5
Receiver: APD
Link loss budget: 24 dB minimum, with no dispersion or 22 dB optical path loss at
BER = 1 * 10 exp – 12 including dispersion
A.9.3 TXP_MR_2.5G and TXPP_MR_2.5G Card Specifications
A-32)
Input Power
Post-FEC BER Sensitivity
N/A – 9 to – 24 dBm
N/A – 9 to – 21 dBm
N/A – 9 to – 30 dBm
N/A – 9 to – 30 dBm
N/A – 9 to – 30 dBm
< 10 exp – 15 – 9 to – 25 dBm
< 10 exp – 15 – 9 to – 24 dBm
< 10 exp – 15 – 9 to – 23 dBm
< 10 exp – 15 – 9 to – 31 dBm
Cisco ONS 15454 DWDM Reference Manual, R8.5
Chromatic Dispersion
Tolerance
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+/– 3300ps/nm
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+/– 1800ps/nm
+/– 5400ps/nm
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+/– 1800ps/nm
+/– 5400ps/nm
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A-53